Garage door openers utilize different drive mechanisms to lift and lower the door. Two common options are chain drives, which employ a metal chain similar to a bicycle chain, and belt drives, which use a reinforced rubber belt. These systems connect the motor to the trolley that moves the door along its track.
Choosing the right drive mechanism significantly impacts the operational characteristics of a garage door. A quiet and smooth operation is often highly valued in residential settings, especially for attached garages. Durability and cost-effectiveness are also key considerations for homeowners. The evolution of these mechanisms reflects advancements in materials science and engineering, providing options that cater to diverse needs and preferences.